RFR: 8311302: Allow for jlinking a custom runtime without packaged modules being present [v10]

[Severin Gehwolf]

On Thu, 30 Nov 2023 17:19:14 GMT, Mandy Chung <mchung at openjdk.org> wrote:

>> Sure this can be done. Makes the jimage a bit larger, but probably negligible as the total set of modules is usually small.
>
> It adds more empty files which I expect should be very small increase in size.   Since this is added by default, we can measure the difference and confirm from the JDK build.

Incidentally it won't save anything for the default JDK build, since all modules include legal files which end up being tracked in those files. So I don't think adding resource files unconditionally matters in practise.

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PR Review Comment: https://git.openjdk.org/jdk/pull/14787#discussion_r1415377556